Forging machine



LSSUBSS H. B. HALVORSEN FORGING MACHINE Filed sept. 29,' 1925 www@ 20?'.-

' llatented ug. 7,1928..

.iT-Ef, ,stares EAT I'IALCBERT B. HALVORSEN, OF MIGHIGAN GITY, INDIANA,`ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A GORPORATION OF MASSACHUSETTS.

i rioneiive MACHINE.

Application filed September -29, 1925. Serial No. 59,346.

i While this invention relates generally to forging machines, it is more particularly directed tocutterbit sharpening machines'.

Cutter bits such asfiised in coal mining machines are made :in different sizes and it is desirable to 'forge' each of the same vby a single machine. Accordingly onevobject of Vmy invention is toprovide improved means for supporting Work pieces of different sizes V and means )vhereby acommon die may forge the-same.l 'One of the dies herein disclosed" is of theV grooved roller type thereby necessil tating 'provision of 4means yvhereby the groove mayalways be-substantially in alinei15 ment' with the center ofthe cooperating dieV in order to form the different sized bits symmetrically. This die'construction is in` distinction to those structures which have only a fiat forging roller die and hence there is no necessity for alineinent between the dies. While the structure 'specifically disclosed herein is adapted .tojsi'ipport' Work pieces of dierent sizes, it vWill be clear thatl bits "of the same size could alsobe forged so 'that when viewed broadly from another` angle, a furtherv object of the invention is to provide in combination Work piece supportingv means, a die, Vand means whereby said supporting means and die may have a plurality of opertive forging 'positions relative to each other. Y I In one vspecific aspect of the invention I accomplish these objectsbyf` providing improved blank supporting means Which comy prises ai laterally movable member having a plurality of slots, each being adapted to r ceive a different sized It vvill beV clear that Vshould 'itbe desirable to increase the` outputof the machine, the blank siipport- Ving means hereinspecifically comprising the slotted memberfcould be so arranged that a blank could be insertedl `in one slot While the other slotivasv in an operative forging relaftion With' respect tothe die.V Upon comple-iV tion of the forging` operationfofthe iirst blank, the supporting means could be moved Vqnickly to .bring the second slot into operative relation With fthe die, at thesame time dischargingthe Iirstfor'ged bit which would slot, and 'upon completion-of the forging operation'jupon the Vsecond blank, reverse;

permit thefin'sertion of a third blank in its disclosed( The third blank is then ready to be forged and the cycle of inserting,

. forming, and discharging the bit can be iepleated. If foi' any reason access to the supporting means is interfered with during the forging operation, the length of the blank supporting lmeans or the distance between the slots therein may be increased.` f

In the accompanying "drawings I have shown for purposes of illustration one form which my invention may assume in practice.

In these draWings,-` "h Fig. l is a side elevation of a forging mac me.

Fig -2 is a front end elevation thereof l "partly broken away to show details of construction. i

Fig. 3 is a fragmentary longitudinal vertical: section substantially on line 3-3 of I? ig. 2, parts of which are shown in elevation. i

Fig. 4 is a perspective of the bit supporting member.l v

In the illustrative embodiment of my invention I have shown a forging machine generally indicated l and of the type disclosed in the patent of one Harry C. Johansen, Patent No. 1,604,414, dated Oct. 26, 1926. This machine comprises generally a reciprocable crosshead 2 actuated by suitable vmechanism drivenfrom the fly Wheel pulley 3. A roller forging die flfreely rotatably mounted in a clapper box 5 is carried by a member 6 yieldably supported upon thev crosshead 2. "A stationary raised 4die 7 is dis-Av posed inthe path of movement of the roller die and has its transverse configuration substantially identical to the transverse dimensions of a groove formed in the roller periphery. During forging of a bit blank 8 the face of the bit portion yvill be formed and for discharging the same is generally the same as disclosed in thepatent Which briefly described comprises a portion 9 upon Which the raised die 7 issupported, this portionbeing provided with a laterally extending vertically inclined face 10. A hsecond lat-V erally extending supporting portion 11 is spaced rearwardly of the surface l0 andv is `provided with an overhanging depending side of theforging frame and connected'to` tongue 12. A combined blank support and discharge member 13 has agroove 1-l 1n which the tongue l2 1s received and an 1n- `clined face 15 which rests against the inclined'face 10. Slots 16 and17 of different dimensions are formed inthe member A13 thereby acconnnodating bits of different sizes. As disclosed'in said patent during forging of a blank one of the slots will be in the same plane asthe roller and raised dies. Upon discharge of the blank, the member 13 `will be moved "laterally to a point 'whereby the bit will fall' forwardy through theopen side of the slotsl and downwardly through an opening 18 onto a chute 19. The transverse portion 9 has a portioncut away to permit the forward discharge movement Y of the blanks from the slots-in the member 13. Tomove themeinber 13 laterally an operating lever`2() is pivotally,supported on the the member 13 as by a rod 21. p y

After the size of the bit to be forged is determined upon, the member 13 will be moved torbring oneor the other ofthe grooves 16 and 17 into operative relation to the forging dies. To Vprevent lateral movement of the member during a forging operation,

combined feeding and interlocking mecha- Hnism 1s provided similar to that disclosedin said patent.

Briefly this mechanism comprises a longitudinally movable member 2a having an inclined cam surface 25 and a gear rack 26. The` member24= is adapted tobe Vmoved into one or the other of slots 2'?, 28 formed in the member 13 as by a gear segment 29 meshing with said rack and operated Vby Va suitable hand lever 30 which is secured to a rock shaft 31 upon which thegear 29 is mounted.

. In operation one or the otheriof the Yslots 16 `or17 will be brought into operative relation with the forging dies; The feeding member 24 will then bev moved forwardly intoveither the slot`27 or the slot 28,V depending on the bit receivingslo't'selected, thereby preventing 'lateral movement of the mem-v ber 13.V A blank may then be inserted in the 'selected slotuntil it rests upon t-he inclined cam'surface 25v after which reciprocationof the vroller die el will gradually form the` bit portion while longitudinal movementof the member 24jwill cause' upward feeding of the blank to permit completion of the forging n operation. Upon completion the member 24 K f r`will 'be moved rearwardly to` permit lateralA "movement of the member 18l whereuponthe f ffinishedbit will be discharged through "the Y {openmg 18, the sameoperationbeing carried V'through for the other blankV receiving slot. 'hile lhave in this application specifical- .l ly described one z4 form wli'ichmy invention A'may assume mpractice, it will be understood Y v :that this form of the same is shown for pur-l p'osesof illustration and thatithe invention v, 8l A-forging in maybe modified and embodied in various i and means for effecting substantial Valinement of the groove Vof said die and the axes of; blanks supported by said supporting means to forge'saidblanks substantially sym-y metrically. Y

A Vforging machine lcomprising La' grooved forging "die, meansfor simultaneously supporting bit blanks 0fV different sizes, and means for effecting substantial Valinement of the groove'ofsaid die and the aires;

comprising a 1 machine'` comprisingV a of blanks to forge the latterV substantially i symmetrically, i and means forV discharging blanks Vof different sizes including a common discharge member.V

4f. rA forging machine comprising a,

grooved roller forging die, -a cooperating raisedvdie, and blank supporting Vineans -havingportions adapted to receive a plurality of` blanks, 'said supporting means being `operable to position ja selected blank,VV lo be'operated uponby said cooperating 5. A forging'machine comprising a normally stationary Vblank lsupport having a plurality of blank receiving slots, a movable forging die, and means for moving'said ,support transversely of the path of die movementto bring into theipathV of said diera blank supported in either slot.v p Y 1 6 A forgingV machine-comprising a normally stationary blank support having al plurality of blank-receiving slots-and means f for moving the-same laterally. f 4,

A forging machine, f :omprising'` a grooved forging die, means for, simultane-- ously supporting differentV size Work. pieces including movable meansV `having spaced' blank engaging; walls, and V-mean'sifor effecting movement of said movableffmeans to selectivelyi'placesaid said die groove.' E y c fchine comprising a forging die, means for simultaneously supporting a plurality of different sized blanks, said supporting means beingloperableto feed the. said blanksto forging'positionfandto dis-1 Vcharge the saidblanks after forgingfiscompleted.

9.` A Aforging machine comprising' a movable forging die, means for simultaneously blanks in alinement with; ,120

supporting a plurality of blanks, said supporting meansy being mo-vable to feed said blanks to forging position, and means to prevent displacement thereof during a forging operation.

n 10. A forging machine comprising means` Y yfor simultaneously supporting a` plurality of different sized blanks, means for moving said supporting means to dischargel the blanks, and means including blank feeding mea-ns for preventing discharge of said blanks during a forging operation.

l1. A forging machine comprising a reciprocable die, an element'having slots of different Vsizes to receive dierent sized blanks, and' means for moving said element laterally of the path of movement of said die to bring said slots into operative rela- Y tion with said die. 20

blanks, and movable laterally of the path of movement of said die to bring said slots` into operative relation with said die, and means for preventing lateral movement of said supporting means during forging including a plurality of slots formed therein and a longitudinally movable member insertible therein.

13. A forging machine comprising a reciprocabledie, an element having slots of different sizes to receive different sized blanks, and movable laterally of the path of movement of said die to bring said slots into operative relation with said die, means for preventing lateral movement of said supporting means including a plurality of slots formed therein and a longitudinally movable member insertible therein, and feeding means for said blanks including said longitudinally movable member.

In testimony whereof I aiiiX my signature.

HALBERT B. HALVORSEN. 

